document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1140221>Question 1140221</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat travels 3 km upstream and 3 km back. The time for the round trip is 7 hrs. The speed of the stream is 4 ​km/hr. What is the speed of the boat in still​ water? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #760706 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39625)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=760706\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "               SPEED       TIME         DISTANCE\r\n" );
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document.write( "upstream         r-4       3/(r-4)        3\r\n" );
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document.write( "downstream       r+4       3/(r+4)        3\r\n" );
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document.write( "TOTAL                       7\r\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2F%28r-4%29%2B3%2F%28r%2B4%29=7 ALIGN=MIDDLE  ALT=\"3%2F%28r-4%29%2B3%2F%28r%2B4%29=7\"   DISABLED_style= \"max-width:90%; height:auto;\" >-----simplify and solve. </SPAN>\n" );
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